2642539 has 8 divisors (see below), whose sum is σ = 2903040. Its totient is φ = 2394216.

The previous prime is 2642537. The next prime is 2642543. The reversal of 2642539 is 9352462.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2642539 - 2¹ = 2642537 is a prime.

It is a d-powerful number, because it can be written as 2⁷ + 6² + 4⁶ + 2²¹ + 5⁵ + 3¹² + 9⁴ .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2642539.

It is not an unprimeable number, because it can be changed into a prime (2642537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2587 + ... + 3460.

It is an arithmetic number, because the mean of its divisors is an integer number (362880).

2^2642539 is an apocalyptic number.

2642539 is a deficient number, since it is larger than the sum of its proper divisors (260501).

2642539 is a wasteful number, since it uses less digits than its factorization.

2642539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6089.

The product of its digits is 12960, while the sum is 31.

The square root of 2642539 is about 1625.5888163985. The cubic root of 2642539 is about 138.2527573851.

The spelling of 2642539 in words is "two million, six hundred forty-two thousand, five hundred thirty-nine".